You'll find removable and stuck retainers. Fastened retainers are often called bonded retainers and so are attached for the back of enamel with dental bonding. These are typically chosen typically for young people who find themselves unlikely to maintain up with their retainer with no it getting fixed into position. https://directoryrelt.com/listings644613/5-tips-about-top-orthodontic-products-you-can-use-today